11512613611 has 4 divisors (see below), whose sum is σ = 11571053472. Its totient is φ = 11454173752.

The previous prime is 11512613597. The next prime is 11512613653. The reversal of 11512613611 is 11631621511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11512613611 - 2¹⁵ = 11512580843 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11512613611.

It is not an unprimeable number, because it can be changed into a prime (11512613711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29219635 + ... + 29220028.

It is an arithmetic number, because the mean of its divisors is an integer number (2892763368).

Almost surely, 2^11512613611 is an apocalyptic number.

11512613611 is a deficient number, since it is larger than the sum of its proper divisors (58439861).

11512613611 is an equidigital number, since it uses as much as digits as its factorization.

11512613611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58439860.

The product of its digits is 1080, while the sum is 28.

The spelling of 11512613611 in words is "eleven billion, five hundred twelve million, six hundred thirteen thousand, six hundred eleven".